{90}It feeds on _Pteris incisa_, a beautiful pale green fern, attaining a height of four feet or more, and growing in open situations in the forest. This fern is especially abundant on old decaying logs situated amongst light brushwood. When disturbed these larvæ immediately drop to the ground and coil themselves up. In this situation they are very inconspicuous, as their colouring so closely resembles that of the faded fronds or stems of the fern. The pupa is buried in the earth about two inches below the surface, the insect remaining in this state during the winter months. The moth first appears about September, and continues in great abundance until the end of March or beginning of April. It frequents forest, and is noticed most commonly in the neighbourhood of its food-plant. There are probably several broods in the course of a year. SESTRA FLEXATA, Walk. (_Cidaria flexata_, Walk. 1421.) (Plate IX., fig. 37.) This species has occasionally occurred in the neighbourhood of Wellington. I have no records of its capture elsewhere, but expect it will be found to be generally distributed. The expansion of the wings is about 1¼ inches. _The fore-wings are bright orange-red_; there is a very faint transverse line near the base, darker on the costa; a dark red oblong mark on the costa near the middle; and a faint transverse line beyond the middle, also darker on the costa. The hind-wings are bright ochreous-yellow, with the cilia orange. This insect varies considerably in the intensity of its colouring. It has long been considered as merely a variety of _Sestra humeraria_, but as I have not observed any intermediate forms, although the two insects frequently occur together, I think it may be regarded for the present as a distinct species. The perfect insect appears from October till December, and is found in the same localities as _S. humeraria_. Genus 5.--GONOPHYLLA, Meyr. "Face shortly rough-haired. Palpi moderate, arched, ascending, shortly rough-scaled, terminal joint short. Antennæ in male rather stout, pubescent. Coxæ and femora densely rough-haired beneath. Fore-wings with vein 6 from below 9, 7 from below angle of areole, 10 shortly touching 9, 11 separate, 12 free. Hind-wings normal."--(Meyrick.) (Plate II., figs. 63 and 64, neuration of _Gonophylla nelsonaria_.) Of this genus we have but one species. GONOPHYLLA NELSONARIA, Feld. (_Gonodontis_ (?) _nelsonaria_, Feld. cxxiii. 3. _Gonodontis felix_, Butl., Proc. Zool. Soc. Lond. 1877, 389, pl. xlii. 10. _Phyllodoce nelsonaria_, Meyr., Trans. N. Z. Inst. xvi. 104. _Gonophylla nelsonaria_, ib. xviii. 184.) (Plate X., figs. 3 and 4 [M] varieties, 5 and 6 [F] ditto.) This handsome insect is common in the neighbourhood of Wellington. It has also occurred at Nelson and Dunedin, and is possibly generally distributed throughout the country.